Eversion;
Usually refers to lateral movement of the calcaneus, produces pronation in the subtalar joint.
Dynamic movement, static position
Pronation
Inversion; refers to medial movement of the calcaneus, supination in the subtalar joint.
Dynamic movement, static position
Supination
Stance phase and Swing phase
Phases of gait
Heel Strike, midstance, and propuslive period
Stance Phase
Heel Strike
- Major functions: transfer weight and shock absorption
Heel strike
Midstance
- Major functions: bearing weight, convert foot from adaptive shock absorber to rigid lever for propulsion
Midstance
Propulsive Period
Propulsive period
Approximately 60% of gait cycle
Stance phase
Approximately 40% of gait cycle
Swing phase
Acceleration, mid swing, deceleration
Phases of Swing phase
Acceleration phase
- halfway point to swing phase
Mid swing
- major function: decelerates lib to prepare for contact and weight transfer
Deceleration
Six Classical Determinants
Pelvic rotation Pelvic tilt Pelvis shift Knee flexion Knee-ankle relationship Hip flexion
Normal oscillation pattern
High point:_______________
Midstance (either foot)
Normal Oscillation pattern
Low point:________________
Double weight bearing (toe-off/heel strike)
Rotation of the entire pelvis away from the side of the forward leg.
Pelvic rotation
4 degree to each side
Pelvic rotation
Pelvic rotation
Pelvic dips inferiorly on the swing side (4-6 degrees)
Pelvis shift
Hip adduction on stance side
Smoothes pelvic motion, helps maintain balance
Pelvis shift